Barghest Collar
Wondrous Item, Rare (Requires Attunement by a Worg)

As a Bonus Action when you bark the command word, you can transform from your worg form into a goblin form with your choice of physical characteristics, including age, sex, skin color, hair color, and voice. While transformed, your size is Small and you lose your Quadruped and Bite traits. Otherwise, your statistics don’t change.

You can maintain the transformation for up to 4 hours, all at once or in several shorter periods, each one using a minimum of 1 minute of the duration. The collar regains 2 hours of transformation time for every 12 hours it isn’t in use.